[PATCH] D80434: [AMDGPU] Reject moving PHI to VALU if the only VGPR input originated from move immediate

[Alexander via Phabricator via llvm-commits]

alex-t updated this revision to Diff 266021.
alex-t added a comment.

Explicit call to isSafeToFoldImmIntoCopy added. Corresponding COPY converted to S_MOV right away.
2 test cases added to check for copy to subreg and inappropriate move opcodes.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D80434/new/

https://reviews.llvm.org/D80434

Files:
  llvm/lib/Target/AMDGPU/SIFixSGPRCopies.cpp
  llvm/test/CodeGen/AMDGPU/phi-vgpr-input-moveimm.mir

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